['nullable', 'string', 'max:255'], 'status' => ['nullable', Rule::in(['active', 'inactive'])], 'connection_type' => ['nullable', Rule::in(['api', 'radius'])], 'service_type' => ['nullable', Rule::in(['ppp', 'hotspot', 'radius'])], 'page' => ['nullable', 'integer', 'min:1'], 'per_page' => ['nullable', 'integer', 'min:1', 'max:100'], 'sort_by' => ['nullable', Rule::in(['id', 'name', 'host', 'connection_type', 'service_type', 'vendor', 'device_type', 'status', 'created_at'])], 'sort_direction' => ['nullable', Rule::in(['asc', 'desc'])], ]; } }